Mold



Fatented Nov. 7, 1922.

irsars rar HRRY NYE. OF AKRON, (JHEB.

MOLD.

To all whom it mcag/ co'ncem Be it known that I, llannr Nrn, a citizen of the United States, and a resident of ..-*ileron, inxthe county of Summit and Ohio, have invented certainnew and u, Vful Improvements in a Mold`r of which the fol-- lowing is a full, clear, and exact description.

My mold is particularly adapted for the manufacture of a ball such as described in my co-pending applicationd` Serial Na. 528,610, filed Jan. 12, 1922. but may he u for other articles by a change in the form and dimensions of the mold members.

An object of iny invention is the'provision of amold suitable for vul-:anizing or curing articles containing a proportion of rubber, which will be simple to manufacture and efficient in operation.

Another object is to so arranged thc parts that there will be a free circulaticn of stean'i through all parts so that the mold may be properly heated.

Another object is to provide a mold so constructed that one may be stacked on top of the other in a tire heater or similar device to the capacity thereof, and which will permit an efficient circulation of steam between the units thereof.

Other objects will be apparent from the following detailed description and the appended claims.

Figure 1 is a plan view of the device. the left hand part showing the cover plate in position. I

Figure 2 is in part a perspective view but showing a section on the line 2-2 of Figure 1 Figure 3 shows a perspective view of a portion of a top or bottom plata particularly illustrating the steam pass-agree.

Figure 4: is a perspective view of the two semi-spherical members that inclose the ball. Figure 5 illustrates an\alternative'method of stacking the molds.

Each unit of the mold consists of a main plate 1, which may be made of any desired shape or size. It is preferahly oircular and of a size to fit Within a tire heater. Top and bottom members 2 and 3 are held in close contact therewith by a suitable number of bolts 4 When the clevice is assembled.

The main or central plate l has a plurality of cylindrical openings 8 passing therethrough in Which fit the molds proper.

Around each cylindrical opening 8 are arvquite thin.

ranged in hexagonal shape siz-i ogpienings 5 which eXtend through the plate i.

The top and bottom plates and 5% are of similar formation except turned to face oppositely. Each has openings 6 passing therethro-ugh which'register with the openngs 5 in the central plate. A Continuous' passageway is there-fore formed through the unit composed of the plates l, 2 and 3.

Moreover, the top and bottom plates have on their outer surface passage ways 7 of the shape shown in Fig'ures 1 and which connect each opening 6 with the three nearest openings as shown.

The structure shown in Figure 2 constitutes a unit, and these units are to be stacired One above the `other in a heater of suitablc design. Vi7hen so stacked the channels or passage ways 7 of one top plate register with the similar passageways in the bottom plate resting thereon. Also the passageways formed the openings 5 and G extend from -top to bottom of the stack. It obvious that a very thorough Circulation of steam is provided for and that it will pass close to the cylindrical openings 8 on all sides thereof.

In these cylindrical openingzs 8 are place-:l

the molds proper, illustrated in Figure 4. Each of these elements 9 and 10 has a semicylindrioal cavity 12 as clearly shown in Figure "'2, and their meeting` edges ll are Since these molds fit snugly within the cylinders 8 and the meeting cdpjes are thin. there is no chance for the material composing the ball or its cover to he forced out between the edges or between the mold elements 9 and '1.0 and the cylinder 8. In preparing each unit, the bottom 3 is first placed on a support' and the central plate 1 placed upon it.I The balls or other articles are placed in the mold elements 9 and 10 Which are then placed in the cylinders 8. The top 2 is placed in position and all threeiparts fastened by means of the bolts 4.' The unit is then placed within the heater. Obviously as many units may he stacked one upon the other as desired within the capacity of the heater.

An alternative method of stacking the i molds is shown in Figure 5. By this method the bottom section of one mold serves as the top section of the mold below, or vice versa. If for example, three main sections are used. the arrangement might be as illustreted in ali) iii

this figure, the two intermedia sections 3 serving both as top and bottom sections. Bolts -l of any desired length ma v be cmployed. This permits a. greater number ot the main sections to be placed a beat. of given size, and obtains a `greater efficient-,y in the use ot the heating medium. i

This mold While simple and ch ap in struction causes a uniform cure of tt and at the same time does n steam to come into contact \ritn themselves. i I

It is obvious that by a change in the form ot the openings 8 and a cornxsiamdiugg change in the form o'f the mold members S) and 10, my device may be used to cure er vulcanize other articles With no turthcr modification in its construction. Theretoreq While especially adapted to the nia'.=.iu` of balls, the invention is in no Way limited thereto.

Details of form and mai'erial constitute no part of my invention exrept as thev maj-z be claimed.

l .claim as my invention:

1. A mold comprisingr a. central plate member having cylindrical openinejs therein and passageways for a heating medium arranged around said openings and parallel thereto7 similar top and bottom plates having' passageways adapted to register With those in the central plate and also h aving channels in their outer surtaces Which connect each passagewav With the adjacent one, semi-cylind rical mold members each havingI a semi-spherical oavity therein and adapted to fit in said cylindrical openingzs, and means 'for holding the three plates lirmly together.

2. A mold comprising a central plate member having` cylindrical openings therein, semi-cylindrical mold members each having a cavity therein and adapted to tit closely in the cvlindrical openings, top and bottom plates to fit on either side of' the central plate and retain the mold members in position, registering passageways through the three plates for the passage of a heating medium, and channels in the outer surfaces of the top and bottom plates Communicating anv the bal is f c te re ``With said passageways.

A mold comprising` acentral plate member having; openi'ngs theren, similar mold members adapted to fit closely Within said openings, each mold member having' a cavity therein, top and bottom plates that tit closely on either side of the central plate and retain the mold members in positifm.I and ieans for permitting the circulation 01" a heating medium along` the surface of the outer plates and through all of the plates.

l. A mold comprising;` a central plate member having openings therein` similar mold members adapted to fit closely Within i said openings., each mold member having a cavity and a thin edge Where it engag'es its- ('onipanion member, top and bottom plates on either side of the central plates Which retain the mold members in: position7 means 'l'or holdinga' the plates lirml)T together. and means 'for permitting` the circulation ot a heating medium along; the surface and through the interior of the mold.

5. A. mold comprising a central plate member having,` openings therein, mold members fitting Within said openings, outer plate members, means tor retaining` all ot the plate members together and holding the molds in position, and means for permitt-ing the circulation ot a heating` medium on all sides ot said mold members.

6. A mold unit comprising: a central plate member, `havingr ope-nings therein, mold members tittingwithin said openings, outer plate members. means tor holding' said platev members firn'ilv together and retaining the molds inpositioin passageways in the sur- :taces ot the outer members Ytor the circulation ot a heating medium, the pass-ageivays ot one unit registeringg` With 'those of adjacent units When staclted one upon another.

7. A mold unit comprising a central plate member having opcnings therein, mold meinbers litting' Within said opcnings. outer plate members, p asageways through all plate members and passageways in the ou er surtaces ot the outer members Jfor the circulation of a heating):` medium, all passageways ot one unit registering With those ot adjacent units When-staclred one upon another.

8. A stacl: of molds comprising plate `members having` openings therein, mold members fi'ttinp; Within said openings, and alternatinp; plate members, passageways through all of said plate members.,` and passaofeways in one surface of the alternating i ilate members, all ot said passageways communisating` and providing means `lior thorough circulat-ion ot aI heating medium.

In testimony Whereot, I have hereunto subscribed my name. Y

HARRY NYE. 

